<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<div>
<h1>注册页面</h1>
<input type="text" v-model="user.username" placeholder="用户名" @blur="f()"><span>{{info}}</span><br>
<input type="password" v-model="user.password" placeholder="密码" @blur="f1()"><br>
<input type="text" v-model="user.nickname" placeholder="昵称" @blur="f2()"><br>
<input type="button" value="注册" @click="reg()">
</div>
<script src="https://cdn.bootcdn.net/ajax/libs/axios/0.21.1/axios.min.js"></script>
<script src="https://cdn.staticfile.org/vue/2.2.2/vue.min.js"></script>
<script>
  let v =new Vue({
    el:"body>div",
    data:{
        info:"",
        user:{
            username:"",
            password:"",
            nickname:""
        }
    },
    methods:{
      reg(){
          axios.get("/regAxios",v.user).then(function (response) {
              alert(response.data)
          })
      },
        f(){
            axios.get("/check?username="+v.user.username).then(function (response) {
                v.info = response.data;
            })
            console.log("用户名："+v.user.username);
        },
        f1(){
            console.log("密码："+v.user.password);
        },
        f2(){
            console.log("昵称："+v.user.nickname);
        },
    }
  })
</script>
</body>
</html>